Lock



N. B. HURD Jan. l, 1935.

LOCK

Filed Jan. 6, 1953 INVENTOR A/onMA/v 6T Hwaa A ORNEYS i the' plug-byeJ key other `than a specialbr reset Patented Jan. l, 1935 'A The American f Myfinvention relates toa lockand'moi'e par ticularly tor means for removably 'seouringfa lock `de 'aetuated by a speoialdor freset key so'as rito,

permit ready removalefthe lock from itsc'ase;

` j Other objects and featuresof `theinvention` will' be hereinafter-pointed out'or-will becorrieappar- -ent upon a reading of the'specication in connections/1th thel drawing. f i ffl Briey stated`,fin faepreferredform 01E` the ventionfI employ a look `oase suehas-aknob having an opening for the reception of aloek` `comprising a cylinder and plug. -""The lock is held.-

in the' ease against 1axial Withdrawalfby means of a member such. asa spring" pressed plungenand which is unaffected-by thev normal` operationr-of key. With i a reset'`v key,` theflockng or rsecuring means may beaotuated and upon partial' rotation of the plug by lmeans of `the `resetkey, the holding mechanism is Areleased and thelock may be with-- drawn fromits casel" il 2 In .said `drawing Which-shows, for illustrative purposes only,` a preferredforn ot the invention-- through `a knob and lock, illustrating `'features ofthe-invention y Fig. 2 is a sectional view'taken substantiallyin Fi'g. 3 is a View similar termi, 10111;` illustrating especial or resetfkeyinplanef l Fig; 4 is'a lseetifmal.View taken substantially-in the plane of the linel4"4` ofF"g.-3,fthe plugfand associa/ted parts being rotated to aposition to permit Withdrawal ofthe lock from thefcasef f In said drawing, `5 indicates alockcasefnr the Aform of a `knob having an open-ngfor `thefreeep tion of Jaflock `ccnnprising'J Acylinder Sfand' 'al rotatablerplug 7. 'Thelook llustratedisof tl'iewell lnovmpln tur-nblerl type and f'needs fno ffurther desriptionf.\ `'Zl'l-ie. lock may belheld the knob against rotation by means" of abutments Aor lugs Suh as 8 Which engage opposite sides of thetumr blerbarrel of the cylinder".` lfhe outer end ofA the cylinder may be-f`proyded Witha nishlor faceplate `9 securedllthereto and tting the opening in the knob so as to support theouter end of the trated :in Fig Y the-preferredlorm :illustrated the Plug i '7 www plug is'ltulifnedtherebythelockparts maybe :Withdywnjlrlu M i, i l In the form shovvnthe cylinder is providedwith fan abutment or; as imbre" 'speclfcally illustrated,

Vwith a "bore br opening for l'the lreceptonoff a locking plunger 13gfthefouterend of whichlmay engage a suitable openlg or behind an `abutment 114 Iinthe l-f The' abutrnent'11,` illustrated las an: annular f'rlange; is@ preferable mainly?. from a manufacturing-point of view, since a mere drilled 13V4 would sufcet- "Yi- I The lplungrllis normally `spring i pressed in2- merrily,` a'sfbyameans: of acollspringi, interposed betweenjantabutrnent fonitheiplungerl and the'lsecuringringllustrated: `flhe eplunger` 13 isltherel- Ifore'normallyurged tonnlocking position;=that is, to auposition 1 Whioh.LWLmId` releaseqthe plunger from'gthe1-abutment-,14 and permitnxlal 'withdrawal or'theslocki Normally, 'li'owever, `the 1plunger :113 is; held. iny its: locking' position,` illus- 1; by :means tozbe, described: i

carries a sleeve 16, rotatably mountedthe'reon .lld..fprovided.withmn openlngfregistering with the ;inner end 11T-of :the.plunger- 113.v The inner end l'liis turnedgdowrafsoastoprovde a shoulder normally; resting ,1on1 the outsidel .ofy the, sleeve. `16

` and thusholding` the: plunger-.,'linthe axial posi;-

ftion{llllilatedlisfigsgi.andl2. l i i.

will belseenrftbatsincerthe plungenl registers :with i openings'in thepknob, the cylinder and sleeve- '16, `the Lthree flatter elements will :be normallyhheld againstrmovement relatively to each other; Lf .-Thusgthe pass keyf` 1:1 lmay freely rotate the plug ini the fcylnder `for: latch o1'. bolt` actua# 1716115,` i jf 1?., y.; ige Y Whe tisdesiredetoremov thelo'ck from the knoba; special` or vvreset 12.1swemployed, f and; as illustrated, the reset key has a long-nose-l. `The nlugA .carzesiafpin- 19,1yvh1oh normally. (lepressed; 1 as 'shown yin .i t1 tand V2, and held A 1n 'such` position "againstlapart'of #the key! slot; as shown more particularly-linfllig. "T-When the reset key 12 is inserted the long nose 18 raises the pin 19, so as to force the innervend 17 of thev plunger 13 outof the opening in the sleeve and the end of the pin 19 into such opening. Therefore, when the plug is turned by means of the reset key the pin 19 serves to turn the sleeve 16 `With the plug. The sleeve 16 and plug 7 have bore or opening for theV receptionlof thelplunger L keyto the position shown in Fig. l and the lock,y assembly then inserted axially after which 'the' vplug 7, together with the sleeve 16, is turned b'yl means of the reset key and the ,inr 1erend 17 of the plunger 13 rides up o the recess 20 until the pa rotative position illustrated innig, 2, when the then drop down toits normal position,-and the plunger 13 will Alikewise dropr toits rtion ,shewninofis -1.,.and.;2. .q. s, 1 @It wllifthusrbe'., nx-theel. .hav -p Y.vided a ffelaiivelvfsimnle:meansixfori seeurinsra-ileck in .a casersuch asta ',knoavand have provided relatively .simple means for.permittins'irelease ei Said holding means and withdrawal of the lock from ,awhileiitnunen,, lhesibee'n .described in considerabledetail and elif Dreffelred'y.formI illus- "tratedit' is to beunderstoodthat various changes :may be lmade in; the 'mechanism and various em,- :bodiments for the.;` inventions :madeewithin Y the scope, of gthe Yinventio '-a defined in'v the, appended claims. 1

Imclaim,: y k

i 1. In a device of the characteolzrindicated, a Iknob' havinganopening-,11a cylinder lock vto be re- .'ceived lthereinA and-comprising a -1 cylinder-and a -keyf plug,` tumbler: mechanism.- .for 1 securing said knob 1.1 and Ycylinder ,against axial separation, said ,tumblermechanismI having azplurality- .of shear linesandroperablefby'means o'iA arresetkey to cause one shear.y :lineito permitrotation ofvsaid :key plug, and meansor automatically moving -a '.'part. 'or Vsaid tumbler I mechanism lto release said cylinderzl'ock-l'for axialfsepar'ationF from said knobaupon Erotationiof." 'said keyf lug by said `reset;keys# 325;: ..1-:; ';1: .4? i

' 2: In 5a. kdevicefofathe chara ter? indicated,-Y a lknob havlingr'an-:openinggacylinder lock to vbe received ltherein and comprisinga -icylinderl and key ..plug,.zsaidl Vcylinder Iand knob"A lhaving adjacent abutment means r, andiv a f single` member en'- gageable with bdthf said fabutmentffmeans for holding'saidflock insaid knob, afsprin'g for normallyy V,urging .i `said member 1out'." lof- 1 engagement with oneof said-abutments to'srelea'se 'said' lock from said knob,A dogging means cooperatingvvith but v,movable relatively-'Lto said, keyy plug'fandfnormally` holding s'aidime'mber locking position, and means operable by a reset key for Withdrawing .1 said iidogging' means-wand?? permitting said member'ptofbesivthdrawn from 'one of 'said abutment means: ..1 *z ',fx v f 5 fc3. In andeviceriof tthey character indicated, a knobhavingan opening,- a cylinder llock to be received. therein andv comprising a cylinder and key plusfseid ,evlin ehendkne having abut- Va'butments. i flf4. In a device of the character indicated, a

lock caseihaving an opening, a cylinder lock to be vreceived therein and comprising a cylinder and keyplug, valisleeve rotatably mounted on said key plug, said keyplug, sleeve, cylinder and lock case -having` registering openings therein, a plunger'normally positioned in the openings in said cylinder and lock case for holding said lock against axialv Withdrawal from saidcasaapart ofsaid plungerbeing normally in said register'- ing openings in said sleeve and'cylinder, whereby A,said sleeve Willbe held' against rotation on said cylinder and=Will serve toyliold said. plungerin pin carried bysaid key plug, said pin being operable by means of areset. key to kcause the same tolock said key plug and sleeve together and vpermit said sleeve to move irom beneath said plunger, whereby said plunger may be withdrawn `by, said spring to release said lock from` said case. Y

A5,. In a device of the character indicated, a lock `case having an opening, acylinderI lock to be -received therein and including acylinder and key plug, said cylinder andY case having abutment-means, a plunger normally engaging said abutment means for. holding said lock against axial Withdravval'rfrom said case, means for normally holding saidvplunger inlocking lposition and permitting rotation ,ofl said key plug, and means operable by a reset key for removal of said holding, means for said plunger, whereby the Alatter may be Withdrawn `from one of said abutments; to permit ,withdrawal of saidlock from said case. l

6. In a device of the character indicated, a lock case having an opening,a cylinder lock to be received therein and comprising a cylinder and -key plug, a'sleevel member rotatably mounted on said key plug, said sleeve member, cylinder and lock case havingl kregistering openings, a plunger normally engaging ,said fopenings for holding said lock case, cylinder and sleeve against rotation while permitting free rotation'of said key plug, said sleeve. serving to'hold said plunger in locking ,position,kand means operable by a resetkeyfor releasing said sleeve from said plunger andpermitting rotationrof said sleeve with said keyplug,l one of said parts having ka recess for the reception of vsaid plunger when said key plug and sleevey are rotated tov a predeterminedposition whereby said plunger is withdrawn from one of said openings to permit vvith- .drawalof said lock -from said case. i H NQieMAN 4B HURD. 

